Answer:
x = 10
Step-by-step explanation:
Given
6x - 20 = 4x ( subtract 4x from both sides )
2x - 20 = 0 ( add 20 to both sides )
2x = 20 ( divide both sides by 2 )
x = 10
Answer:
f and h
Step-by-step explanation:
u don't need me to explain this
Answer:
Step-by-step explanation:
a ) Let the volume required be v .
v x .8 + 500 x .3 / ( v + 500 ) = .7
.8 v + 150 = .7 v + 350
.1 v = 200
v = 2000 mL
b )
Let the volume of solution A required be v . The volume of solution of B required will be 100 - v
v x .8 + ( 100 - v ) x .3 / 100 = .5
.8 v + 30 - .3 v = 50
.5 v = 20
v = 40 mL
volume of solution B = 60 mL .
c )
It is not possible because 90 % is more than 80 % the concentration of solution A . Any mixture will have concentration less than 80 % .
volume of solution B = 60 mL
Answer:
60.96 cm
Step-by-step explanation:
you do proportions
1 in = 2.54
24in= ?
you multiply 2.54 by 24
